Finite element analysis is used to study the near infrared light distribution in brain tissue. The diameter of the light beam varies from 100 microns to 1 mm. The researching results indicate that the near infrared light distribution in brain tissue gets wider with rising of the beam diameter, and the distribution fields are 0.05-0.2 mm below the probe, respectively. At last, the results of finite element analysis are verified by Monte-Carlo simulation, which prove the feasibility of using near infrared light in brain surgical guidance.
© 2005 Chinese Optics Letters
Lijuan Dai, Zhiyu Qian, and Huinan Wang, "Finite element analysis of the light distribution of the near infrared probe to assist brain neurosurgical guidance," Chin. Opt. Lett. 3, S226-S228 (2005)